| 摘要 |
A method of molding a blade for a helicopter rotor, including the steps of making a bag matrix of heat-expandable material; inserting a rigid mandrel inside the matrix; covering the matrix with a number of layers of composite material of predetermined type; placing the assembly so formed inside a chamber of a mold bounded by a molding surface; and bringing the assembly to a sufficient temperature to expand the matrix and polymerize the layers of composite material compacted between the expanded matrix and the molding surface of the mold.
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